Abstract
Dye sensitized solar cells (DSSCs) have been receiving significant attention because they have many advantages compared to conventional organic solar cells. It has been known that the photovoltaic characteristics of DSSC are highly dependent on the adsorption properties of dyes on TiO2 films. To analyze the surface heterogeneity of TiO2 surfaces, single-phase anatase nanocrystallite titanium films were prepared by sol-gel method using the hydrolysis reaction of titanium tetraisopropoxide under acidic condition and characterized by XRD, FE-SEM and BET analysis. The adsorption energy distribution functions were calculated by the generalized nonlinear regularization method. It was found that the shape and the intensity of the adsorption energy distribution curve determined were highly related with the physical properties (i.e., geometrical heterogeneity) and chemical characteristics (i.e., energetic heterogeneity) of nanocrystalline TiO2 for DSSC.
Article PDF
Avoid common mistakes on your manuscript.
References
M. Grätzel, J. Photochem. Photobiol. C, 4, 145 (2003).
Md. K. Nazeeruddin, R. Jumphry-Baker, P. Liska and M. Grätzel, J. Phys. Chem. B, 107, 8981 (2003).
S. Ngamsinlapasathian, S. Pavasupree, Y. Suzuki and S. Yoshikawa, Solar Energy Materials & Solar Cells, 90, 3187 (2006).
N. G. Park, J. V. D. Lagemaat and A. J. Frank, J. Phys. Chem. B, 104, 8989 (2000).
J. W. Lee, H. C. Kwang, W. G. Shim, C. Kim, K. S. Yang and H. Moon, J. Nanoscience and Nanotechnology, 6, 3577 (2006).
W. Rudzinski and D. H. Everett, Adsorption of gases on heterogeneous surfaces, Academic Press, London (1992).
M. Jaroniec and R. Madey, Physical adsorption on heterogeneous solids, Elsevier, Amsterdam (1988).
A. M. Puziy, T. Matynia, B. Gawdzik and O. I. Poddubnaya, Langmuir, 15, 6016 (1999).
M. Frere, M. Zinque, K. Berlier and R. Jadot, Adsorption, 4, 239 (1998).
M. V. Szombathely, P. Brauer and M. J. Jaroniec, Comput. Chem., 13, 17 (1992).
T. M. Roth, J. Weese and J. Honerkamp, Comput. Phys. Commun., 139, 279 (2001).
J. W. Lee, K. J. Hwang, D. W. Park, K. H. Park, W. G. Shim and S. C. Kim, J. Nanoscience and Nanotechnology (in print, 2007).
W. G. Shim, H. C. Kang, C. Kim, S. C. Kim, J. W. Lee, C. J. Lee and H. Moon, J. Nanoscience and Nanotechnology, 6, 3583 (2006).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, JW., Hwang, KJ., Shim, WG. et al. Energetic surface heterogeneity of nanocrystalline TiO2 films for dye-sensitized solar cells. Korean J. Chem. Eng. 24, 847–850 (2007). https://doi.org/10.1007/s11814-007-0052-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-007-0052-4